Method of electrochemical obtaining of bright tin coatings

Details Method of electrochemical obtaining of bright tin coatings Method of electrochemical obtaining of bright tin coatings

1981-01-22

1982-06-08

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

C25D 332

Patent

active

043338020

ABSTRACT:
In a method for the electrodeposition of bright tin coatings by the use of an electroplating bath comprising a solution of stannous sulfate and sulfuric acid, the improvement which comprises adding to the bath an alcoholic solution containing from 14 to 30 percent by weight of a surface active agent, from 0.5 to 5 percent by weight of an unsaturated carbonyl compound containing an aryl group, from 1.0 to 10.0 percent by weight of the product of transesterification of a natural fat, and at least one of the following ingredients: from 0 to 8 percent by weight of an ester of an unsaturated acid and from 0 to 15 percent by weight of compound containing an ether group, the said solution being added to the bath in the ratio of 1 part of solution to 20 to 35 parts by weight of the bath.

REFERENCES:
patent: 3361652 (1968-01-01), Korpiun et al.
patent: 3585114 (1971-06-01), Wren et al.
patent: 3755096 (1973-08-01), Passal
patent: 4139425 (1979-02-01), Eckles et al.

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